Re: [PATCH v5 8/8] mm: huge_memory: enable debugfs to split huge pages to any order.

From: Zi Yan <ziy@nvidia.com>
To: Mark Brown <broonie@kernel.org>
Cc: "Ryan Roberts" <ryan.roberts@arm.com>,
	"Aishwarya TCV" <aishwarya.tcv@arm.com>,
	"\"Pankaj Raghav (Samsung)\"" <kernel@pankajraghav.com>,
	linux-mm@kvack.org,
	"\"Matthew Wilcox (Oracle)\"" <willy@infradead.org>,
	"David Hildenbrand" <david@redhat.com>,
	"Yang Shi" <shy828301@gmail.com>, "Yu Zhao" <yuzhao@google.com>,
	"\"Kirill A . Shutemov\"" <kirill.shutemov@linux.intel.com>,
	"\"Michal Koutný\"" <mkoutny@suse.com>,
	"Roman Gushchin" <roman.gushchin@linux.dev>,
	"\"Zach O'Keefe\"" <zokeefe@google.com>,
	"Hugh Dickins" <hughd@google.com>,
	"Luis Chamberlain" <mcgrof@kernel.org>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v5 8/8] mm: huge_memory: enable debugfs to split huge pages to any order.
Date: Fri, 01 Mar 2024 10:21:10 -0500	[thread overview]
Message-ID: <D1EB6EA5-205B-4448-BCE0-1D26F3EB34B6@nvidia.com> (raw)
In-Reply-To: <dda99ee0-87a2-482d-bf28-bd5e5a97b46e@sirena.org.uk>

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On 1 Mar 2024, at 9:27, Mark Brown wrote:

> On Fri, Mar 01, 2024 at 02:18:16PM +0000, Ryan Roberts wrote:
>
>> Although I agree it might be a tall order create and mount an XFS fs in
>> run_vmtests.sh. Perhaps it might be good enough to add an optional param to the
>> test to pass a path when running the test manually, and if that's not provided,
>> just try to create a temp file in the current dir and skip if its not the right
>> sort of fs?
>
> Yeah, if it needs to be a specific kind of on disk filesystem then that
> needs a lot more integration with CI systems (a lot of them run entirely
> from nfsroot by default!).  Being able to specify the location via an
> environment variable would also be good, it could fall back to the
> current directory if one isn't set up.

Sure. lkp creates a XFS image and mount it. I will give it a try. If it is too
hard to do, I will do what Ryan suggested above.

--
Best Regards,
Yan, Zi

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